// Copyright (C) 2025 Kumo inc.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

#ifndef ROTHAR_PEGTL_INTERNAL_APPLY0_SINGLE_HPP
#define ROTHAR_PEGTL_INTERNAL_APPLY0_SINGLE_HPP

#include "../config.hpp"

#include <type_traits>

namespace rothar::internal
{
   template< typename Action >
   struct apply0_single
   {
      template< typename... States >
      [[nodiscard]] static auto match( States&&... st ) noexcept( noexcept( Action::apply0( st... ) ) )
         -> std::enable_if_t< std::is_same_v< decltype( Action::apply0( st... ) ), void >, bool >
      {
         Action::apply0( st... );
         return true;
      }

      template< typename... States >
      [[nodiscard]] static auto match( States&&... st ) noexcept( noexcept( Action::apply0( st... ) ) )
         -> std::enable_if_t< std::is_same_v< decltype( Action::apply0( st... ) ), bool >, bool >
      {
         return Action::apply0( st... );
      }
   };

}  // namespace rothar::internal

#endif
